Basically, you would need to set an AutoHotkey script to run in Total Commander whenever a file/folder is opened from it.

RecentX monitors all items that are added to Windows Recent Documeents list. This is nothing but “\Microsoft\Windows\Recent” folder under AppData. If you open %appdata%\Microsoft\Windows\Recent from Windows start menu, you will get to the exact folder.

To make any file type (e.g. “*.pdf”) that you want TC to create shortcuts for in the Windows ‘Recent’ folder run this script, use menu: “Files|Internal Associations” and add the file type. In the input box next to “Open”, put: